As originally defined by the account @uppity_negress_
A person participates in labor digging when they are searching for a partner whom they only value based on the labor they provide, particularly without proper compensation.
Crusty Man: I want a woman who will COOK and CLEAN, MANAGE my household, RAISE my children, and PLEASURE me regularly.
Decent Person: Ew, he is LABOR DIGGING so much right now.